The smash burger is the archetypal American diner burger. The way it's made goes against everything I've ever seen about making burgers, but the result is fantastic. Basically, you just take a ball of minced steak, squash it flat on a hot griddle and cook it quickly. No messing about with treating it gently - it just works!
A little oil or beef dripping for frying. Salt and ground black pepper to taste.